Reproduction in Plants (P5)
- Lily left the 4 jars below on a table in the Science room.
In which of the following jars would Lily most likely be able to observe germination of the seeds?
(1) D only
(2) C and D only
(3) A, B and C only
(4) A, B, C and D ( )
2. The diagram below shows the fruits of 3 different plants, A, B and C.
P, Q and R are maps showing where the parent plants and their seedlings are growing over a period of 3 months.
Which one of the following correctly relates the map to each plant?
Plant A | Plant B | Plant C | |
(1) | P | R | Q |
(2) | P | Q | R |
(3) | Q | R | P |
(4) | R | Q | P |
( )
3. The table below records the characteristics of four flowers, A, B, C and D.
Which flower is most likely to be self-pollinated? | ||||||||||||||||||||||
(1) A
(2) B
(3) C
(4) D ( )
4. Study the diagram below.
In plant reproduction, fertilization takes place when a male reproductive cell fuses with the female reproductive cell. In which part(s) of the flower can the male and female cells be found?
Male Reproductive Cell | Female Reproductive Cell | |
(1) | A | E |
(2) | B | G |
(3) | H | E |
(4) | F | C and D |
( )
5. Three different types of plants, X, Y and Z were identified on some empty
land as shown in Figure 1. All of them bear fruits. A few years later, as a result of dispersal, more of the plants were found as shown in Figure 2.
X |
Y |
Y |
Y |
Y |
Y |
Y |
Z |
Z |
Z |
Z |
Z |
X |
X |
X |
X |
X |
X |
X |
Wind Direction |
Wind Direction |
Based on what you observe from Figure 2, what are the likely characteristics of the fruits of plants X, Y and Z, which helped them to disperse their seeds?
Plant X | Plant Y | Plant Z | |
(1) | Has a water-proof outer covering | Has air spaces | Has thorns |
(2) | Splits open when dry | Is hairy and light | Has a fibrous husk |
(3) | Has wing-like structures | Is fleshy and edible | Has a water-proof outer covering |
(4) | Is fleshy and edible | Splits open when dry | Has hook-like structure |
Section B: Read the questions carefully and write its correct answer in
the spaces provided.
1. | Berries contain seeds. | |||||||||||
(a) | Why do plants produce seeds? | |||||||||||
(b) | Describe one main way that birds help to disperse seeds in these berries. | |||||||||||
Mary investigates which colour berries show up best. She hangs different coloured beads on some green plants. She uses the same number of beads of each colour. Marcus looks for the beads for two minutes. Mary counts how many beads of each colour Marcus finds. The table below shows Mary’s results.
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(c) | Which colour was easiest to see on the plants? | |||||||||||
(d) | Mary and Marcus think that the colour of the berries might affect the number of seeds dispersed by birds. How might the colour of berries affect the number of seeds dispersed by birds? | |||||||||||
2. Ahmad performed an experiment on germination using the apparatus shown below.
He then placed five red bean seeds into each beaker. After 2 days, he noticed that the seeds in Beaker B germinated whereas those in Beaker A did not.
(a) State the aim of his experiment.
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(b) What is the purpose of the layer of oil in each beaker?
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3. | The table below shows the number of processes that must take place before fruits and seeds of flowering plants are produced. The first stage has been done for you. Number the stages from 2 (the next earliest stage) to 7 (the last stage). Write the numbers in the boxes provided. | ||||||||||||||||
a) |
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b) | From the table shown above, which stage (2 to 7) refers to the process of fertilisation? | ||||||||||||||||
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4. Study the classification table below.
Methods of Reproduction |
Leaves |
Suckers |
Underground stems |
African Tulip Begonia Bryophyllum |
Bamboo Banana Pineapple |
Onion Ginger Water chestnut |
(a) Identify the plant that has been wrongly classified.
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(b) Give 2 advantages of growing new plants from plant parts.
(i) __________________________________________________________
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(ii) __________________________________________________________
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5. Sarah presented some information on the reproduction of plants as shown below.
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(a) Based on the flowchart what are the characteristics of Plant C?
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(b) State one difference between Plant A and Plant D.
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(c) Which of the plants (A, B, C or D) could represent watermelon?
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